2010-05-22 - Rider Down/Fatality, Vauxhall Bridge Rd

There's a bit more detail here:

JOSEPH:CEMENT MIXER DRIVER WHO KILLED CYCLIST SPARED JAIL

WESTMINSTER, FULHAM, CLAPHAM. A cement mixer driver who killed a cyclist while carrying an excessive load and an unrestrained dog in his cab has been spared jail. Civil servant Everton Smith, 48, died after he collided with Paul Joseph's truck in Bessborough Gardens by Vauxhall Bridge, central London. The father of three had been cycling home from a game of squash on May 22 last year when Joseph, 45, struck him as he moved from one lane to another. Medics from a passing ambulance and an air ambulance fought to save the cyclist's life but he was later pronounced dead at the scene. A police investigation found that the cement mixer was almost 2,000kg overweight and that there was a dog in the cab, but said neither factor was responsible for the collision.

http://www.courtnewsuk.co.uk/newsgallery/?page=2

so that begs the question what were the factors that were responsible for the collision ?